Arco Lab Tableau Developer Interview Questions and Answers

Q1. Explain example of window function
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Q2. A question using aggregate function and case when in sql
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Q1. Basic analytical case study.
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Q2. Guesstimates and Computer Science basics
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Q1. Write a program for stack implementation.
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Asked me to sort array 30 discussion how many hair cuts in 1year in india

Q1. What is web socket
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Q2. How many haircuts in india in 24 hours
Ans. 
It is impossible to accurately determine the number of haircuts in India in 24 hours without specific data.
• The number of haircuts in India in 24 hours would depend on the population, number of hair salons, and average time taken for a haircut.

• Factors such as holidays, weekends, and special events could also affect the number of haircuts in a day.

• Without concrete data on the above factors, it is not possible to provide ...read more
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Q3. Auth2 vs jwt explain in detail
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OAuth2 is an authorization framework while JWT is a token format for authentication.
• OAuth2 is an authorization framework used for delegated access to resources.

• JWT is a token format that can be used for authentication and information exchange.

• OAuth2 involves obtaining an access token from an authorization server.

• JWT is a self-contained token that contains user information and can be verified without querying a database...read more
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Q4. How ssl works and proxy works
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SSL works by encrypting data transmitted between a client and server, while a proxy acts as an intermediary for requests.
• SSL (Secure Sockets Layer) encrypts data transmitted between a client and server to ensure privacy and security.

• SSL uses cryptographic protocols to establish a secure connection, typically using public key infrastructure (PKI).

• A proxy server acts as an intermediary between a client and server, forwar...read more
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Q1. Be prepared with Pyspark and SQL
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Q2. How to rename a column in pyspark
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Q3. Difference between multiprocessing and multithreading
Ans. 
Multiprocessing involves executing multiple processes simultaneously, while multithreading involves executing multiple threads within a single process.
• Multiprocessing utilizes multiple CPUs or cores to execute multiple processes concurrently.

• Multithreading involves creating multiple threads within a single process to execute tasks concurrently.

• Processes in multiprocessing have separate memory spaces, while threads in m...read more
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Q4. Which one to use when
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Q1. Knowledge about your area , company products,
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Q2. Communication skill for sale growth
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Q1. What projects have you handled?
Ans. 
I have handled various projects including implementing new sales strategies, launching new products, and improving customer service processes.
• Implemented new sales strategies to increase revenue by 15%

• Launched a new product line which resulted in a 20% increase in market share

• Improved customer service processes leading to a 30% decrease in customer complaints
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Q2. What challenges did you face while working on the project?
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I faced challenges with coordinating team members, managing tight deadlines, and adapting to unexpected changes.
• Coordinating team members with different schedules and priorities

• Managing tight deadlines and ensuring all tasks were completed on time

• Adapting to unexpected changes in project scope or requirements
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